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Maths c1

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1. Solve the equation 2x^2 +3x=0

Find the set of values of k for which the equation 2x^2+3x + k=0 has no real roots
2. literally just worked this out whilst writing out the reply so it SHOULD be right.

first bit: factorise the equation to make -> x(2x+3)=0, therefore x=0 and x=-3/2

2nd bit: use b^2-4ac<0 for no real roots. sub in the values so:
3^2-4(2)(k)<0
9-8k<0
9<8k
9/8 < k <--theres ur answer

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Updated: April 11, 2016
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